WASHINGTON -- The House Oversight and Government Reform Committee has issued a subpoena for Secretary of State John Kerry to testify as part of the committee's investigation into the 2012 attack against a U.S. diplomatic facility in Benghazi, Libya. The State Department has said Kerry is unable to appear May 29, and has offered alternative dates of June 12 or June 20.

CAIRO -- Trial of Muslim Brotherhood leader and 50 others in the case known as Rabaa operation room resumes.

BEIRUT -- German Foreign Minister arrives to Beirut for a 2-day offical visit.

RABAT, Morocco -- Morocco has invited the UN human rights chief to visit in effort to showcase the country's positive rights record in the aftermath of the Arab Spring.

BELGRADE, Serbia -- Serbia to make public the final death toll from record floods that hit the Balkans earlier this month, forcing hundreds of thousands from their homes and causing billions of euros of damage to the impoverished region.

GAZA CITY, Gaza Strip -- A negotiator says he expects a Palestinian unity government backed by rivals Hamas and Fatah to be announced.

HAWTHORNE, Calif. -- SpaceX on Thursday is poised to unveil a new spacecraft designed to take astronauts to low-Earth orbit.

WARSAW -- Poland's last communist leader, Gen. Wojciech Jaruzelski, who in 1981 imposed martial law aiming to crush the Solidarity freedom movement but later helped it build Poland's first democratic government in decades, is laid to rest.

MEXICO CITY -- Inbursa opens a giant aquarium in the middle of landlocked Mexico City, the latest of Slim's cultural ventures.

Saturday, May 31:

VIENNA -- Cross-dressers and scantily dressed drag queens mingle with world-famous designers and international glitterati as Vienna's neo-Gothic city hall again throws its doors open to this year's Life Ball -- Europe's largest fund-raiser to fight Aids.

Sunday, June 1:

SAO PAULO -- Final test event before the World Cup is held at Sao Paulo stadium. Corinthians hosts Botafogo in the Brazilian league.

DOHA, Qatar -- The world airline industry's trade group, the International Air Transport Association, hold its 70th annual meeting in the Qatari capital.

BEIRUT -- The President of the World Bank, Dr. Jim Yong Kim, will be visiting Lebanon on June 1.

SOLNA, Sweden -- World Cup-bound Belgium plays Sweden in a warmup before the tournament in Brazil.

TEHRAN, Iran -- Kuwait's emir arrives on first visit to Iran since Rouhani's election, a sign of improving relations between Tehran and U.S. allies in the Gulf.

JAKARTA -- A month-long campaigning for Indonesia's direct presidential election kicks off accross the country, with populist Jakarta governor Joko Widodo as the front-runner versus Prabowo Subianto, a former army general with a checkered human rights record but fully supported by elite politicians and Islamic-based parties.

WARSAW - President Obama and other foreign leaders converge on Warsaw to celebrate with the Poles 25 years since a partly free vote gave the Solidarity freedom movement seats in parliament and paved the way for democracy and for the ouster of communism from Poland and from Central and Eastern Europe.